001/**
002 * Copyright (c) 2022-2023, Mybatis-Flex (fuhai999@gmail.com).
003 * <p>
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 * <p>
008 * http://www.apache.org/licenses/LICENSE-2.0
009 * <p>
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016package com.mybatisflex.core.query;
017
018import com.mybatisflex.core.FlexConsts;
019import com.mybatisflex.core.dialect.IDialect;
020import com.mybatisflex.core.table.TableDef;
021import com.mybatisflex.core.util.StringUtil;
022
023import java.io.Serializable;
024import java.util.Objects;
025
026/**
027 * 查询列，描述的是一张表的字段
028 */
029public class QueryTable implements Serializable {
030
031    protected String schema;
032    protected String name;
033    protected String alias;
034
035    public QueryTable() {
036    }
037
038    public QueryTable(TableDef tableDef) {
039        this.name = tableDef.getTableName();
040        this.schema = tableDef.getSchema();
041    }
042
043    public QueryTable(String name) {
044        this.name = name;
045    }
046
047    public QueryTable(String schema, String name) {
048        this.schema = schema;
049        this.name = name;
050    }
051
052    public QueryTable(String schema, String table, String alias) {
053        this.schema = schema;
054        this.name = table;
055        this.alias = alias;
056    }
057
058    public String getSchema() {
059        return schema;
060    }
061
062    public void setSchema(String schema) {
063        this.schema = schema;
064    }
065
066    public String getName() {
067        return name;
068    }
069
070    public void setName(String name) {
071        this.name = name;
072    }
073
074
075    public QueryTable as(String alias) {
076        this.alias = alias;
077        return this;
078    }
079
080    boolean isSameTable(QueryTable table) {
081        if (table == null) {
082            return false;
083        }
084        if (StringUtil.isNotBlank(alias) && StringUtil.isNotBlank(table.alias)) {
085            if (Objects.equals(alias, table.alias)) {
086                return false;
087            }
088        }
089        return Objects.equals(name, table.name);
090    }
091
092
093    Object[] getValueArray() {
094        return FlexConsts.EMPTY_ARRAY;
095    }
096
097    public String toSql(IDialect dialect) {
098        String sql;
099        if (StringUtil.isNotBlank(schema)) {
100            sql = dialect.wrap(dialect.getRealSchema(schema)) + "." + dialect.wrap(dialect.getRealTable(name)) + WrapperUtil.buildAsAlias(alias, dialect);
101        } else {
102            sql = dialect.wrap(dialect.getRealTable(name)) + WrapperUtil.buildAsAlias(alias, dialect);
103        }
104        return sql;
105    }
106
107
108    @Override
109    public String toString() {
110        return "QueryTable{" +
111                "schema='" + schema + '\'' +
112                ", name='" + name + '\'' +
113                ", alias='" + alias + '\'' +
114                '}';
115    }
116}